If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Quadrupedal; hind feet nearly twice as long as the fore ones, and considerably wider. Both hind and fore feet four-toed. In walking, the hind foot was brought up nearly into the place of the fore one. Tracks but a little to the right and left of the line of direction. Foot pachydactylous.

Four or five-toed, the toes radiating in all directions, especially on the hind feet. Lines also diverge from the track longer than the toes, in two and sometimes three directions, which are acuminate like the toes, but evidently not toes.